A circuit board is provided having a plurality of vias and uniformly spaced connector stubs arranged upon one or both outer surfaces of the control board. Sets of trace conductors are formed within the control board between the vias. The trace conductors are arranged in two planes within the control...http://www.google.com/patents/US5571996?utm_source=gb-gplus-sharePatent US5571996 - Trace conductor layout configuration for preserving signal integrity in control boards requiring minimum connector stub separation
